RE: [IBIS-Users] Monotonicity problem in IBIS models

The IBIS checker will check summed curves if you make
your IBIS file version 4.0 or higher.  All you need to
do is change the [IBIS Ver] value to 4.0 in your IBIS
file and run the parser again, and you should get a
lot fewer (or no) non-monotonic warnings that way.

Arpad
======================================================
-----Original Message-----
From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Andrew Ingraham
Sent: Monday, May 09, 2005 7:59 AM
To: seshadri.kirankumar@wipro.com; ibis-users@eda.org
Subject: Re: [IBIS-Users] Monotonicity problem in IBIS models

...
...
...

This isn't really a problem for simulation, because the simulator should
ONLY be working with the summed currents (Pullup or Pulldown plus Clamps),
and THOSE currents should be monotonic.  But the IBIS checker doesn't (and
can't easily) sum the tables together before checking for non-monotonicity,
so the result is all those warnings you are seeing.

|------------------------------------------------------------------
|For help or to subscribe/unsubscribe, email majordomo@eda.org
|with just the appropriate command message(s) in the body:
|
|  help
|  subscribe   ibis       <optional e-mail address, if different>
|  subscribe   ibis-users <optional e-mail address, if different>
|  unsubscribe ibis       <optional e-mail address, if different>
|  unsubscribe ibis-users <optional e-mail address, if different>
|
|or email a written request to ibis-request@eda.org.
|
|IBIS reflector archives exist under:
|
|  http://www.eda.org/pub/ibis/email_archive/  Recent
|  http://www.eda.org/pub/ibis/users_archive/  Recent
|  http://www.eda.org/pub/ibis/email/          E-mail since 1993